CNN News:研究人员用水下扬声器吸引鱼群来拯救珊瑚礁

A team of scientists says acoustic enrichment may be able to help revitalize dead coral like what's found in some parts of the Great Barrier Reef. But what is acoustic enrichment? It's underwater loudspeakers and the music they play includes the sounds of healthy reefs. One of the authors of a study recently published in "Natures Communications", says healthy coral reefs are noisy places. They include the grunts of fish and the snaps of shrimp. But dead coral reefs are apparently much quieter without the hustle and bustle of undersea life.

So what scientists did was put speakers on dead coral patches of the Great Barrier Reef and play the sounds of healthy reefs. And they said that attracted fish about twice as many as areas of dead coral without the sounds. Researchers say the fish could help ecosystems recover and give the coral the chance of new life. The speakers aren't a proven solution at least not at this point. Scientists can't say for sure if the fish that the noises attracted actually stuck around.
That could be key to a reefs recovery. And they're hoping to do more research on this. But they think that the loud speakers could help. There are a number of threats to the health of coral reefs. They range from pollution and low tides to invasive species and changes in water temperature.